macOS
Notarized .dmg for Apple Silicon and Intel.
Download
Nothing to download yet. Invites go out from December.
Download for macOS — in beta
Windows (Microsoft Store)
Recommended path — MSIX signed by Microsoft, automatic updates.
Windows (direct EXE)
Unsigned installer, downloaded directly from letos.app. No paid signing certificate.
"Windows protected your PC" is normal for an unsigned EXE from a small developer — Microsoft shows this based on reputation, not on the file being unsafe. Click "More info" → "Run anyway". We'll sign the installer once it makes sense to; until then, the Store version above is signed by Microsoft itself.
Linux (.deb)
Ubuntu 22.04+ and derivatives (glibc, webkit2gtk-4.1). AppImage and Flatpak arrive after launch.
iPhone (App Store)
Syncs with desktop via Letos Plus. No local AI (see pricing).
Letos isn't out yet. Invites go out from December 2026, public release on 1 Jan 2027. When there's something to download, we'll email you — leave us your address on the homepage.
Want an early invite?
Invites go out from December 2026, public launch on 1 January 2027. Leave us your email and we'll tell you the moment there's something to try.
Invites from December 2026 · limited number · public on 1 January 2027